摘要:
A fluorescent lamp including a glass bulb, a protection layer formed on an inner surface of the glass bulb, and a phosphor layer formed on a surface of the protection layer. The surface of the protection layer that is in contact with the phosphor layer has cracks. The bulk density of the metal oxide particles in the protection layer 32 is 80% or more. The surface of the protection layer 32 has 20 to 200 cracks per millimeter in a tube axis direction. The average particle diameter of the metal oxide particles is in the range from 0.01 μm to 1 μm. The thickness of the protection layer is in the range from 0.5 μm to 5 μm.
摘要:
A fluorescent lamp including a glass bulb, a protection layer formed on an inner surface of the glass bulb, and a phosphor layer formed on a surface of the protection layer. The surface of the protection layer that is in contact with the phosphor layer has cracks. The bulk density of the metal oxide particles in the protection layer 32 is 80% or more. The surface of the protection layer 32 has 20 to 200 cracks per millimeter in a tube axis direction. The average particle diameter of the metal oxide particles is in the range from 0.01 μm to 1 μm. The thickness of the protection layer is in the range from 0.5 μm to 5 μm.
摘要:
A fluorescent lamp includes a glass container (204) having mercury enclosed therein, and a phosphor layer (202) formed on an inner side of the glass container (204). The phosphor layer (202) includes phosphor particles (202a) and rod-shaped bodies (202b) composed of a metal oxide and spanning between the phosphor particles. The rod-shaped bodies (202b) have a thickness of, for example, 1.5 [μm] or less. Pairs of adjacent phosphor particles may be spanned by more than one rod-shaped body.
摘要:
A fluorescent lamp (20) includes a glass bulb (30) that has mercury enclosed therein, and a phosphor layer (32) formed on an inner side of the glass bulb (30). The phosphor layer (32) includes three types of phosphor particles, which are red phosphor particles (32R), green phosphor particles (32G) and blue phosphor particles (32B) that are excited by ultraviolet radiation to emit red light, green light and blue light respectively. The blue phosphor particles (32B) and green phosphor particles (32G) have a property of absorbing ultraviolet radiation with a wavelength of 313 nm.
摘要:
The present invention relates to a manufacturing method for a phosphor suspension to be applied to an inner surface of a glass bulb of a fluorescent lamp, and a fluorescent lamp manufactured with use of the phosphor suspension.The method comprising the steps of kneading a mixture (38) of a small amount of solvent (32) including a thickening agent and a phosphor powder (30), and agitating the mixture after adding a solvent (40) including a thickening agent and a binding agent, and a metal compound as a coating agent (42) to the mixture.The fluorescent lamp pertaining to the present invention includes a phosphor layer formed by applying the phosphor suspension manufactured by the above-described method to the inner surface of the glass bulb, drying the suspension, and baking the suspension.Since the method pertaining to the present invention comprises the step of kneading, the phosphor particles included in the formed phosphor layer are densely arranged. As a result, the contact area between the phosphor particles and the inner surface of the glass bulb becomes large, and the phosphor layer hardly peels off. Also, since the phosphor particles are coated with the metal compound, the phosphor particles are prevented from reacting with Na included in the glass bulb and becoming degraded.
摘要:
A backlight unit has an external electrode fluorescent lamp in an housing. The external electrode fluorescent lamp includes a glass bulb having a discharge space inside, and electrodes around both ends of the glass bulb. A protective layer and a phosphor layer are formed on an internal surface of the glass bulb in this order. The glass bulb is made of soda glass, and sodium oxide precipitated from this soda glass appears on part of the internal surface of the glass bulb where the protective layer is not formed, so as to be exposed to the discharge space.
摘要:
A backlight unit has an external electrode fluorescent lamp in an housing. The external electrode fluorescent lamp includes a glass bulb having a discharge space inside, and electrodes around both ends of the glass bulb. A protective layer and a phosphor layer are formed on an internal surface of the glass bulb in this order. The glass bulb is made of soda glass, and sodium oxide precipitated from this soda glass appears on part of the internal surface of the glass bulb where the protective layer is not formed, so as to be exposed to the discharge space.
摘要:
A backlight unit has an external electrode fluorescent lamp in a housing. The external electrode fluorescent lamp includes a glass bulb having a discharge space inside, and electrodes around both ends of the glass bulb. A protective layer and a phosphor layer are formed on an internal surface of the glass bulb in this order. The glass bulb is made of soda glass, and sodium oxide precipitated from this soda glass appears on part of the internal surface of the glass bulb where the protective layer is not formed, so as to be exposed to the discharge space.
摘要:
An LED lamp provides a strong red color with a natural appearance. The LED lamp is provided with an LED module and a filter. The LED module includes a blue LED with a main emission peak in the 440 nm to 460 nm wavelength band, a green/yellow phosphor that is excited by light emitted by the blue LED, and a red phosphor that is excited by light emitted by at least one of the blue LED and the green/yellow phosphor. The filter reduces the spectral radiation intensity of at least a portion of the 570 nm to 590 nm wavelength band among light emitted by the LED module.
摘要:
An LED lamp provides a strong red color with a natural appearance. The LED lamp is provided with an LED module and a filter. The LED module includes a blue LED with a main emission peak in the 440 nm to 460 nm wavelength band, a green/yellow phosphor that is excited by light emitted by the blue LED, and a red phosphor that is excited by light emitted by at least one of the blue LED and the green/yellow phosphor. The filter reduces the spectral radiation intensity of at least a portion of the 570 nm to 590 nm wavelength band among light emitted by the LED module.